616537560 has 64 divisors (see below), whose sum is σ = 1874976480. Its totient is φ = 162155520.

The previous prime is 616537547. The next prime is 616537561. The reversal of 616537560 is 65735616.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616537561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26431 + ... + 43950.

Almost surely, 2^616537560 is an apocalyptic number.

616537560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

616537560 is an abundant number, since it is smaller than the sum of its proper divisors (1258438920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616537560 is a wasteful number, since it uses less digits than its factorization.

616537560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70468 (or 70464 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 616537560 is about 24830.1743852112. The cubic root of 616537560 is about 851.1116067677. Note that the first 3 decimals are identical.

The spelling of 616537560 in words is "six hundred sixteen million, five hundred thirty-seven thousand, five hundred sixty".